As a response to the population aging, various home rehabilitation or care aids are developed to aid those in need. Commonly used instruments include cardiopulmonary resuscitation machine, low-frequency therapy device, deep vein thrombosis, electric thermal pad, etc. Driven by the medical power supply of the latitude, this type of mobile or portable instrument is very suitable for the external adapter GSM/GEM series or the PCB type MPM/MFM/RPS series. The various models can fully satisfy various medical system requirements for stable and safe DC voltages. These series models can meet 2xMOPP insulation and are suitable for BF type equipment.